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APPROXIMATE asteroid positions for HI1-B based on the file 20090318_180901_s4h1B.fts:
(Note: the pixel coordinate origin (0,0 location) is the lower-left corner) 

Asteroid designation/name:  X-position, Y-position
----------------
19 FORTUNA:  993, 478
20 MASSALIA:  56, 484
23 THALIA:  181, 886
28 BELLONA:  495, 540
41 DAPHNE:  51, 123
62 ERATO:  401, 542
65 CYBELE:  8, 461
72 FERONIA:  704, 371
93 MINERVA:  603, 677
96 AEGLE:  192, 522
106 DIONE:  23, 676
124 ALKESTE:  891, 465
127 JOHANNA:  556, 786
147 PROTOGENEIA:  262, 440
150 NUWA:  739, 453
160 UNA:  518, 602
210 ISABELLA:  31, 697
283 EMMA:  949, 334
324 BAMBERGA:  664, 458
335 ROBERTA:  698, 540
345 TERCIDINA:  750, 224
363 PADUA:  427, 728
416 VATICANA:  847, 992
449 HAMBURGA:  478, 616
712 BOLIVIANA:  472, 55
773 IRMINTRAUD:  518, 429
----------------
NOTE: Not all of these asteroids will be visible, and not all visible asteroids
are recorded in this file.  This is just a guide, not an exhaustive list.
Also note that for HI-1B, these positions have an error of up to +/- 10 pixels.